87136452 has 96 divisors (see below), whose sum is σ = 248088960. Its totient is φ = 26282880.

The previous prime is 87136433. The next prime is 87136463. The reversal of 87136452 is 25463178.

87136452 is a `hidden beast` number, since 8 + 7 + 1 + 3 + 645 + 2 = 666.

It is a super-2 number, since 2×87136452² = 15185522534296608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73827 + ... + 74997.

It is an arithmetic number, because the mean of its divisors is an integer number (2584260).

Almost surely, 2^87136452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87136452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124044480).

87136452 is an abundant number, since it is smaller than the sum of its proper divisors (160952508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87136452 is a wasteful number, since it uses less digits than its factorization.

87136452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1242 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 87136452 is about 9334.6907822380. The cubic root of 87136452 is about 443.3362983703.

The spelling of 87136452 in words is "eighty-seven million, one hundred thirty-six thousand, four hundred fifty-two".